Comparative Suitability of Whorl Stages of Sweet Corn for Establishment by Larvae of the Corn Earworm 1 , 2 , 3

Autor: W. W. McMillian, B. R. Wiseman, H. R. Gross
Rok vydání: 1976
Předmět:
Zdroj: Environmental Entomology. 5:955-958
ISSN: 1938-2936
0046-225X
DOI: 10.1093/ee/5.5.955
Popis: The suitability of several growth stages of whorl-stage sweet corn for establishment of artificially introduced larvae of the corn earworm, Heliothls zea (Boddle), was studied. The frequency of establishment and survival increased proportionally with increasing maturity of the plant at the hme of infestation. Least survival (indicated by the presence of larvae at mid-green tassel) occurred at pre- to early-whorl, and maximum survival occurred at mid- to late-whorl. Natural regulation of larval populations was affected by rainfall and by a tachanid parasite, Archytas marmoratus (Townsend).
Databáze: OpenAIRE